1. 忠于：at lowest 至少,最低 . | be loyal to 忠于 . | in the main 基本上,大体上 .
2. 对......忠诚：be open to 对......开放 | be loyal to 对......忠诚 | be helpful to对......有益处
3. 对......忠诚,忠实于：be hard pressed to do sth. 做......很困难(lesson11) | be loyal to 对......忠诚,忠实于......(lesson11) | be no match for 不是......的对手(lesson7)
4. 对----忠诚的：be liable for 有责任 | be loyal to 对----忠诚的 | be married to 和某人结婚